Insulator support



April 28, 1931. G. w. BRADY 1,302,966

INSULATOR SUPPORT Filed Jan. 17. 1929 2 Sheets-Sheet 1 April 23, 1931-G. w. BRADY I 1,802,966

-INSULAT OR SUPPORT Filed Jan. 17, 1929 2 Sheets-Sheet 2 Patented Apr.28, 1931 UNITED STATES PATENT OFFICE GEGRGE W. BRADY, OF NEW BRITAIN,CONNECTICUT, ASSIGNOR TO THE BRADY ELEC- TRIO & MANUFACTURING COMPANY,OF NEW BRITAIN, CONNECTICUT INSULA'IOR SUPPORT Application filed January17, 1929. Serial No. 333,053.

, My invention relates to an insulator support, and more especially toan insulator support of the swinging bracket type which may adjustitself so that the strain on the brzhcket is always in a direct linewith the An object of the invention is to provide an insulator supportin the form of a swinging bracket or the like in which the insulator ismounted on an element which may be readily and quickly attached toordetached from another element which is adapted to be mounted on abuilding, pole or the like.

In a more specific aspect, the invention contemplates a swinging bracketprovided with a bail on which the insulator is received 1 and a supportfor the bail, the structure of the support being such that the bail maybe quickly attached to or detached from the support.

A further obj ect of the invention is to provide a device of the abovecharacter in which the bail or other element on which the insulator isreceived is held in its support against accidental displacement.

I To these and other ends, the invention consists in the novel featuresand combination of parts to be hereinafter described and claimed.

In the drawings:

Fig. 1 is a plan view of an insulator support according to inyinvention;

, Fig. 2 is a sectionalview along line 2-2 of Fig. 1, b.nt on anenlarged scale;

Fig. 3 is a fragmentary plan view of the structure shown in Fig. 2;

Fig. 4 is a perspective view of a part of the insulator support;

Fig. 5 is a plan view of a modified form; Fig. 6 is a sectional viewtaken along line 6-6 of Fig. 5, but on an enlarged scale; Fig.7 is aplan view of the structure shown in Fig.6;

Fig.8 is a perspective view of the insulator support shown in Fig. 5,but partly broken away;

Fig. 9 1s a plan View of anothermodificanon; I

' Fig. 10 is a sectional view taken along line 10-10 of Fig. 9;

Fig. 11 is a plan view of the structure shown in Fig. 10; and

Fig. 12 is a perspective view of the insulator support shown in Fig. 9but partly broken away.

Referring to the drawings, in which I have illustrated my invention byshowing some preferred embodiments of the same, and with particularreference to Fig-s. 1 to 4, inclusive,

the reference numeral 15 indicates, in general, a swinging bracketcomprising a bail or yoke 16 generally U-shaped in form, the ends of thelegs 17 and 18 of the bail being bent into loops (not shown) in which isreceived a bolt 19 having an insulator 20 mounted thereon, insulator 20being received between legs 17 and 18 and held against displacement bynut 21 on the end of bolt 19. Reference numeral 22 indicates'alag screwhaving a shank 23 which passes through a An important part of theinvention resides inthe provision of means whereby the bail or otherelement on which the insulator is directly supported may be readilyattached to or detached from a supporting element, in the presentinstance, the strap 24.

Referring again to Figs. 1 to 1, inclusive, it will be seen that the arm26 of strap 24 is cut away at one side to form an inwardly and forwardlydirected slot 30 which communicates with opening 28 rearwardly of thecenter thereof. Arm 25 is provided with a similar slot 31 which islikewise directed inwardly and'forwardly. Arm 26 forwardly of slot 30 isbent away from arm 25, while arm 25, forwardly of slot 31, is bent awayfrom arm 26, both arms forwardly of openings 28 and 29 beingtransversely arcuate in form, as shown particularly in Fig. 2.

lVhen the insulator support is in use, the bail 16 will normally occupythe position :in in) by the reference numeral 16.

shown in dotted lines in Fig. 4 and indicated then it is desired todetach the insulator from its support, the bail 16 is swung in openings28 and 29, until, for example, one of the arms of the bail, in thisinstance the upper arm, is opposite the slot 30, whereupon the upper armof the bail may move downwardly through slot 30 into the position shownin dotted lines in Fig. 2, and indicated by reference numeral 16". Itwill now be apparent that the bail may be moved between strap arms 25and 26 into the position indicated by reference numeral 16 in Fig. 4,and finally into the position indicated by reference numeral 16 in thesame figure, whereupon the bail may be separated from the support. 'Thebail may be assembled on the support in a reverse manner.

It is to be notedthat the displacement of arms 25 and 26 forwardly ofslots 30 and 31 provides a greater clearance between arms 25 and 26 atthis point than is provided rearwardly of openings 28 and 29, andfurthermore, the upward displacement of the forward edges of slots 30and 31 provide ramps which to a certain extent oppose movements of bail16 towards slots 30 and 31, especially when the bail is subjected to thetension of a wire supported on the insulator. Thus, accidentaldislodgment of the bail from the support is prevented. The clearancebetween the forward ends of the strap arms is such that the bail may bereadily moved between these arms when detachment is necessary.

From the above description of one of the preferred embodiments of theinvention, it will be readily understood that the bail supportingelement, in this instance the lag screw 23 and strap 24, may beseparately mounted on a building or pole or the like, and the insulatorand its bail may be quickly assembled thereon or unlocked after the lineis set or quickly and completely salvaged after the line has served itsusefulness.

In Figs. 5 to 8 inclusive, I have shown a modification in which the bail32 passes through the insulator and is provided with interengaginghook-like ends 33 and 34. Strap 35 is quite similar to strap 24 exceptthat it will be noted that slots 36 and 37 are, in this instance, muchnarrower than slots 30 and 31. It will further be noted that the bail 32at bend 38 is flattened. With this form, the relatively narrow slots andflat-- tened bail require a somewhat more precise positioning of thebail in attaching or detaching the same from the support which greatlyassists in preventing accidental disengagement of the hail from thesupport.

In Figs. 9 to'12 inclusive I have shown another modification which whilesimilar in general to the other forms distinguishes therefrom in thatthe strap 39 is made of somewhat thinner resilient material and in thatlegs 40 and 41 at their outer ends are spaced apart a less distance thanthe thickness of bail 42. In'this instance, it is proposed to insert theend of a screw driver or similar instrument between arms 40 and 41 tospread them apart a sufficient distance to permit the insertion of thebail in attaching the bail to the support, or detaching it from thesame, this spacing of the arms being of great assistance in preventingthe hail from becoming accidentally disengaged from the strap or othersupporting means. It will be noted that the arms 43 and 44 of bail 42are substantially parallel to one another adjacent the bend 45, thepurpose of this shape being to permit the bail arms to assume theposition shown in Fig. 10 in dotted lines, wherein the bail is in aposition such that it may pass between the arms 40 and 41 of strap 39.

While I have shown some preferred embodiments of my invention, it willbe understood that it is not to be limited to all the details shown, butis capable of modification and variation within the spirit of theinvention and the scope of the appended claims.

IVhat I claim is 1. In an insulator support, an insulator, a bail-likeelement on which the insulator is received, and a support on which thebaillike element is detachably mounted, said support comprising a pairof flat parallel arms, each of said arms having a circular openingtherein and a slit extending forwardly into the openings from one sidethereof, the slit in one arm being on the remote side thereof from theslit in the other arm, and the arms forwardly of the openings beingspaced apart a distance substantially equal to the thickness of thebail-like element.

2. In an insulator support, an insulator, a bail-like element on whichthe insulator is received, and a support on which the baillike elementis detachably mounted, said support comprising a pair of flat parallelarms spaced apart at their ends a distance substantially equal to thethickness of the baillike element, each ofsaid arms having a circularopening therein and a slit extending forwardly into the openings fromone side thereof, the slit in one arm being on the re- 7".

mote side thereof from the slit in the other arm, and the arms forwardlyof the slits being bent outwardly away from one another a sufficientdistance to permit the passage of the bail-like element through theslits into the openings.

3. In an insulator support, an insulator, a bail-like element on whichthe insulator is received, a lag screw, a strap having a centrallylocated aperture in which the screw is received, said strap and screwbeing secured together against relative movement, the strap beingdoubled over to present two parallel arms spaced apart at their ends adistance substantially equal to the thickness of the bail-like element,each of said arms having a circular opening therein for the reception ofthe bail-like element, and a slit extending forwardly into the openingsfrom one side thereof, the slit in one arm being on the remote sidethereof from the slit in the other arm, and the arms forwardly of theslits being bent outwardly away from one another a suflicient distanceto permit the passage of the bail-like element between the arms andthrough the slits into the opening.

In witness whereof, I have hereunto set my hand this 10th day ofJanuary, 1929.

' GEORGE W. BRADY.

